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  2. Rood (unit) - Wikipedia

    en.wikipedia.org/wiki/Rood_(unit)

    Rood is an English unit of area equal to one quarter of an acre [2] or 10,890 square feet, exactly 1,011.7141056 m 2. A rectangle that is one furlong (i.e., 10 chains, or 40 rods) in length and one rod in width is one rood in area, as is any space comprising 40 perches (a perch being one square rod).

  3. Rod (unit) - Wikipedia

    en.wikipedia.org/wiki/Rod_(unit)

    As a unit of area, a square perch (the perch being standardized to equal 16 + 1 ⁄ 2 feet, or 5 + 1 ⁄ 2 yards) is equal to a square rod, 30 + 1 ⁄ 4 square yards (25.29 square metres) or 1 ⁄ 160 acre. There are 40 square perches to a rood (for example a rectangular area of 40 rods times one rod), and 160 square perches to an acre (for ...

  4. Acre - Wikipedia

    en.wikipedia.org/wiki/Acre

    1 acre is approximately 208.71 feet × 208.71 feet (a square) 4,840 square yards; 43,560 square feet; 160 perches. A perch is equal to a square rod (1 square rod is 0.00625 acre) 4 roods; A furlong by a chain (furlong 220 yards, chain 22 yards) 40 rods by 4 rods, 160 rods 2 (historically fencing was often sold in 40 rod lengths [49])

  5. Ordnance Survey Great Britain County Series - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey_Great...

    Originally the area of these places was given in acres, roods and perches. [4] After about 1879 this was changed to solely acres, with area given to three decimal places. As boundary changes occurred throughout the late 19th century, reprints of map sheets would be updated with annotations detailing these changes.

  6. Furlong - Wikipedia

    en.wikipedia.org/wiki/Furlong

    An acre was the amount of land tillable by one man behind one team of eight oxen in one day. Traditional acres were long and narrow due to the difficulty in turning the plough and the value of river front access. An oxgang was the amount of land tillable by one ox in a ploughing season. This could vary from village to village, but was typically ...

  7. Return of Owners of Land, 1873 - Wikipedia

    en.wikipedia.org/wiki/Return_of_Owners_of_Land,_1873

    A is acre (640 to the square mile). R is rood: a ploughing strip 220 yards long (one furlong) and 5.5 yards (5.0 m) wide (one rod, pole or perch). Four roods equal one acre. P is a square pole [30.25 square yards (25.29 m 2)]; 40 square poles equal one rood.

  8. Irish measure - Wikipedia

    en.wikipedia.org/wiki/Irish_measure

    The Irish acre or plantation acre measured one Irish chain by one Irish furlong, or 4 Irish perches by 40, or 7840 square yards: approximately 0.66 hectares or 1.62 statute acres. [54] The Lancashire acre around the Solway Firth and the Churchland acre in Yorkshire were the same size, which Frederic Seebohm in 1914 connected to the erw of Gwent ...

  9. Gunter's chain - Wikipedia

    en.wikipedia.org/wiki/Gunter's_chain

    Since an acre measured 10 square chains in Gunter's system, the entire process of land area measurement could be computed using measurements in chains, and then converted to acres by dividing the results by 10. [2] Hence 10 chains by 10 chains (100 square chains) equals 10 acres, 5 chains by 5 chains (25 square chains) equals 2.5 acres.